EP1964524B1 - Surgical stapling apparatus - Google Patents

Surgical stapling apparatus Download PDF

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Publication number
EP1964524B1
EP1964524B1 EP08075145.6A EP08075145A EP1964524B1 EP 1964524 B1 EP1964524 B1 EP 1964524B1 EP 08075145 A EP08075145 A EP 08075145A EP 1964524 B1 EP1964524 B1 EP 1964524B1
Authority
EP
European Patent Office
Prior art keywords
surgical stapling
drive beam
stapling apparatus
tool assembly
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP08075145.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1964524A1 (en
Inventor
Sachin Shah
John Beardsley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Covidien LP
Original Assignee
Covidien LP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Covidien LP filed Critical Covidien LP
Publication of EP1964524A1 publication Critical patent/EP1964524A1/en
Application granted granted Critical
Publication of EP1964524B1 publication Critical patent/EP1964524B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2901—Details of shaft
    • A61B2017/2905—Details of shaft flexible
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2926—Details of heads or jaws
    • A61B2017/2932—Transmission of forces to jaw members
    • A61B2017/2933—Transmission of forces to jaw members camming or guiding means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2926—Details of heads or jaws
    • A61B2017/2932—Transmission of forces to jaw members
    • A61B2017/2933—Transmission of forces to jaw members camming or guiding means
    • A61B2017/2937—Transmission of forces to jaw members camming or guiding means with flexible part
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B2017/320052—Guides for cutting instruments

Definitions

  • This present disclosure relates to a surgical stapling apparatus, and more particularly to an endoscopic surgical stapling apparatus for applying a plurality of surgical fasteners to body tissue.
  • Surgical devices wherein tissue is first grasped or clamped between opposing jaw structure and then joined by surgical fasteners are well known in the art.
  • a knife is provided to cut the tissue which has been joined by the fasteners.
  • the fasteners are typically in the form of surgical staples but two part polymeric fasteners can also be utilized.
  • Instruments for this purpose may include two elongated members which are respectively used to capture or clamp tissue.
  • one of the members carries a staple cartridge that houses a plurality of staples arranged in at least two lateral rows while the other member has an anvil that defines a surface for forming the staple legs as the staples are driven from the staple cartridge.
  • the stapling operation is effected by cam bars that travel longitudinally through the staple cartridge, with the cam bars acting upon staple pushers to sequentially eject the staples from the staple cartridge.
  • US2005/006430 discloses a surgical instrument with a lateral moving articulation control. Closure of the anvil and cartridge assemblies of the instrument of US2005/006430 is achieved through the use of a closure sleeve (32) which includes a closure ring (33) and closure tube (35).
  • a closure sleeve (32) which includes a closure ring (33) and closure tube (35).
  • the two-part form of independent claim 1 is based on this document.
  • US2006/025811 discloses a surgical instrument particularly suited to endoscopic use, articulated by an end effector by including an articulation mechanism in an elongate shaft that incorporates an electrically actuated polymer (EAP) actuator for remotely articulating the end effector.
  • EAP electrically actuated polymer
  • the present invention provides a surgical stapling apparatus as defined in appended claim 1.
  • a surgical stapling apparatus including a frame, an endoscopic portion extending distally from the frame, a tool assembly, a drive member and a rod.
  • the frame includes a first handle and a second handle.
  • the tool assembly includes an anvil, a cartridge assembly and a camming surface.
  • the tool assembly is supported adjacent a distal end of the endoscopic portion.
  • the drive member is connected to the first handle and has a distal end configured to engage at least a portion of the camming surface. Actuation of the first handle moves the drive member distally into engagement with at least a portion of the camming surface to approximate the anvil and the cartridge assembly with respect to one another.
  • the drive member has an opening therethrough.
  • the rod is connected to the second handle so that manipulation of the second handle advances the rod distally through the opening of the drive member and ejects staples from the cartridge assembly.
  • the method includes the step of providing a surgical stapling apparatus having a frame, an endoscopic portion extending distally from the frame, a first handle, a second handle, a tool assembly having an anvil and a cartridge assembly, and a drive beam.
  • the method also includes the step of actuating the first handle to move the drive beam to approximate the anvil and the cartridge assembly.
  • the method further includes the step of actuating the second handle to move a firing rod through an opening in the drive beam.
  • proximal refers to that part or component closer to the user or operator, e.g., surgeon or physician
  • distal refers to that part or component farther away from the user.
  • Surgical stapling apparatus 100 of this embodiment includes a frame 600, a clamp handle 602, a firing handle 636, an endoscopic portion 758 and a tool assembly 17. Endoscopic portion 758 defines a longitudinal axis for surgical stapling apparatus 100.
  • Frame 600 is of an overall size and shape convenient for being held in the hand.
  • Clamp handle 602 and firing handle 636 are both pivotally mounted to frame 600 for articulated movement between open and closed positions.
  • Tool assembly 17 includes an anvil 796 and a cartridge assembly 836.
  • Anvil 796 and cartridge assembly 836 extend from a distal portion of endoscopic portion 758 and are pivotably secured in relation to each other.
  • Anvil 796 includes a tissue-contacting surface with staple forming depressions thereon (not explicitly shown in the illustrated embodiments).
  • Cartridge assembly 836 includes a plurality of surgical fasteners 226 (see FIG. 8 ) therein, which are ejectable through tissue and into anvil 796.
  • a replaceable staple cartridge (not explicitly shown in the illustrated embodiments) may be used with surgical stapling apparatus 100 of FIG. 1 .
  • Such a replaceable staple cartridge may house a plurality of staples arranged in at least two lateral rows and may be mountable in a cartridge channel of cartridge assembly 836.
  • Drive assembly 120 of this embodiment includes a drive beam 500 and a firing rod 550.
  • the drive beam 500 is configured for longitudinal translation to approximate anvil 796 and cartridge assembly 836 with respect to one another.
  • the firing rod 550 is configured for telescoping movement with respect to drive beam 500 by translating through an opening 502 in drive beam 500 to fire surgical fasteners 226 (e.g., staples) and/or to cut tissue.
  • surgical fasteners 226 e.g., staples
  • drive beam 500 includes a first portion 504 and a second portion 506. At least part of first portion 504 (e.g., a protrusion thereon) is configured for engaging anvil 796.
  • First portion 504 of drive beam 500 has a vertical portion 508 and generally horizontal portions 510a and 510b. Horizontal portions 510a, 510b are configured so that first portion 504 generally has an I-shaped cross-section.
  • a first opening 502a of first portion 504 extends through vertical portion 508.
  • Horizontal portion 510a is configured to engage upper camming surface 822 of anvil 796.
  • Horizontal portion 510b is configured to engage cartridge assembly 836 (see FIG. 4 ).
  • second portion 506 of drive beam 500 extends proximally from first portion 504 and defines a second opening 502b, such that second opening 502b communicates with first opening 502a.
  • second portion 506 includes two generally rectangular portions 506a and 506b defining second opening 502b therebetween.
  • drive beam adapter 560 FIGS. 2 and 3
  • Drive beam adapter 560 may engage a suitable drive member (not explicitly shown in this embodiment) extending proximally through the endoscopic portion 758 of surgical stapling apparatus 100.
  • Drive beam 500 is thereby connected to clamp handle 602 through a linkage to allow the movement of clamp handle 602 or firing handle 636 to be transferred to impart movement of drive beam 500.
  • firing rod 550 is attached directly or indirectly to firing handle 636 through a gear mechanism (see FIG. 1 ).
  • Frame 600 and handles 602 and 636 may be constructed and arranged as disclosed in U.S. Patent No. 5,318,221 .
  • Other mechanisms for connecting firing handle 636 and/or clamp handle 602 to firing rod 550 and drive beam 500 may be used.
  • a toothed rack may be connected to firing rod 550 and driven by a pawl connected to firing handle 636.
  • drive assembly 120 is arranged to allow tool assembly 17 to articulate.
  • Tool assembly 17 is pivotably attached to endoscopic portion 758 at a pivot pin or flexible portion of endoscopic portion 758 to define an articulation junction 512.
  • Second portion 506 of drive beam 500 is configured and arranged to flex around articulation junction 512 ( FIGS. 1 and 4-6 ) through selection of materials for second portion 506 and firing rod 550, for example. Additionally or alternatively, second portion 506 and/or firing rod 550 may be comprised of a plurality of sheets or layers.
  • Firing rod 550 of the present embodiment is configured to fit through first and second parts 502a, 502b of opening 502. Firing rod 550 is capable of traveling through drive beam 500, and can be configured to travel through drive beam 500 when tool assembly 17 is articulated.
  • drive beam 500 and/or firing rod 550 of the present disclosure may be made from a rigid, semi-rigid or flexible material (or combinations thereof) such as, for example, metal (e.g., stainless steel) or plastic.
  • firing rod 550 may include several portions that are telescopingly retractable and extendable with respect to each other. Shapes and configurations of firing rod 550 other than those shown are also contemplated by the present disclosure.
  • surgical stapling apparatus 100 is usable with a disposable loading unit (DLU) 16, such as the one illustrated in FIG. 7 , which may have linear rows of staples between about 30 mm and about 60 mm.
  • DLU 16 has a proximal body portion and a tool assembly attached to the proximal body portion.
  • Other examples of disposable loading units for use with a surgical stapling apparatus are disclosed in commonly-owned United States Patent No. 5,752,644 to Bolanos et al.
  • endoscopic portion 758 of surgical stapling apparatus 100 is inserted into a patient, possibly through an endoscopic tube.
  • the endoscopic tube may be capable of maintaining a sealed pneumoperitoneum, with an internal sealing member of the housing further maintaining this seal despite introduction of surgical stapling apparatus 100 in accordance with the disclosure into the endoscopic tube.
  • the jaws of the instrument are closed for insertion into the endoscopic tube, either by closing anvil 796 and cartridge assembly 836 or by pivoting clamp handle 602.
  • anvil 796 and cartridge assembly 836 are returned to their first open position by opening clamp handle 602.
  • Endoscopic portion 758 may be rotated to appropriately orient the instrument at the stapling site by manipulating a finger wheel, a sleeve, or rotation knob 28 (see FIG. 1 ).
  • Rotation knob 28 may include a scalloped shape to facilitate engagement by a user's finger.
  • Tissue stops 828 in anvil 796 may be included to prevent overinsertion of the tissue within tool assembly 17. Once the surgeon is satisfied with the placement of the tissue within tool assembly 17, tool assembly 17 is used to clamp the tissue.
  • clamp handle 602 ( FIG. 1 ) is pivoted downward towards frame 600.
  • Clamp handle 602 is connected to drive beam adapter 560 so that drive beam 500 moves longitudinally when clamp handle 602 is pivoted closed. This distal longitudinal movement causes a portion of drive beam 500 to contact camming surface 822 of tool assembly 17 forcing anvil 796 towards cartridge assembly 836. Further details of the clamp handle 602 and drive member are disclosed in U.S. Patent No. 5,318,221 .
  • firing handle 636 moves firing rod 550 longitudinally.
  • An actuation sled 234 is positioned distally of the distal end of firing rod 550 so that the distal longitudinal movement of firing rod 550 advances actuation sled 234 in the distal direction.
  • firing handle 636 is released and returns to its original position, possibly with the help of a kicker spring 660 and a firing handle return spring 659. Further details of firing fasteners and the retraction of firing handle 636 are disclosed in United States Patent No. 5,318,221 to Green et al.
  • firing handle 636 is actuated in a full stroke to close anvil 796 and cartridge assembly 836 and at least one subsequent stroke is utilized to deploy surgical fasteners 226 from cartridge assembly 836.
  • clamp handle 602 may not be necessary.
  • tool assembly 17 of the present disclosure could be replaced with other interacting jaw members such as, for example, a pair of gripping jaw members for grasping and dissecting tissue as well as clamping jaw members for clamping off tissue or portions thereof.
  • These interacting jaw members may include serrated portions to improve gripping/holding ability.
  • the interacting jaw members may be provided with tissue contacting surfaces that may prevent or minimize trauma to held or clamped tissue.
  • firing rod 550 may be used to drive functions other than surgical fasteners and/or knives.
  • a user pivots clamp handle 602 downward to advance a suitable drive member and drive beam adapter 560, thus causing drive beam 500 to travel distally and approximate anvil 796 and cartridge assembly 836.
  • FIG. 5 illustrates tool assembly 17 prior to drive beam 500 traveling distally.
  • FIG. 6 shows tool assembly 17 approximated after drive beam 500 has moved distally. While FIGS. 5 and 6 illustrate drive beam 500 moving anvil 796 with respect to cartridge assembly 836, it is envisioned and within the scope of the present disclosure that one or both of anvil 796 and cartridge assembly 836 is movable, so that drive beam 500 moves cartridge assembly 836 only, or moves both cartridge assembly 836 and anvil 796. It is also envisioned that, in lieu of clamp handle 602, a partial stroke of firing handle 636 may advance drive beam 500 a sufficient distance to approximate tool assembly 17, or a full stroke of firing handle 636 approximates tool assembly 17.
  • drive beam 500 upon depression of clamp handle 602 (or partial actuation of firing handle 636), drive beam 500 travels distally. Horizontal portions 510a and 510b of drive beam 500 travel a distance so that horizontal portion 510a contacts camming surface 822 of anvil 796, thus approximating anvil 796 and cartridge assembly 836 while horizontal portion 510b engages cartridge assembly 836. Drive beam 500 continues distally until it contacts a lip 825 of anvil 796. In such an embodiment, a portion of drive beam 500 may be approximately aligned with a tissue stop 828 when lip 825 is contacted. Upon contacting lip 825, drive beam 500 ceases distal travel.
  • Firing rod 550 translates through opening 502 of drive beam 500, either before, during or after drive beam 500 is translated distally. It is envisioned and within the scope of the present disclosure that firing rod 550 is a rectangular band, circular, or other shape in cross-section. In such an embodiment, firing rod 550 may be appropriately dimensioned to slidingly fit within opening 502.
  • firing handle 636 is actuated. Actuation of firing handle 636 translates firing rod 550 through second portion 506 of drive beam 500 (as discussed above), through first portion 504 of drive beam 500 and into actuation sled 234 ( FIG. 8 ) (or another suitable structure such as cam bars), which causes fasteners 226 to be ejected from cartridge assembly 836 and into tissue. More specifically and with reference to FIG.
  • actuation sled 234 translates through longitudinal slots of cartridge assembly 836 and cam surfaces 232 of actuation sled 234 are advanced into contact (e.g., sequential contact) with pushers 228.
  • This movement causes pushers 228 to translate substantially vertically within the longitudinal slots and urges fasteners 226 into staple forming depressions of anvil 796.
  • a knife blade is disposed on the distal end of firing rod 550 or on actuation sled 234, so that the knife blade is proximal of cam surfaces 232 of actuation sled 234.
  • a replaceable staple cartridge may be used with surgical stapling apparatus 100.
EP08075145.6A 2007-02-28 2008-02-08 Surgical stapling apparatus Expired - Fee Related EP1964524B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/712,849 US7682367B2 (en) 2007-02-28 2007-02-28 Surgical stapling apparatus

Publications (2)

Publication Number Publication Date
EP1964524A1 EP1964524A1 (en) 2008-09-03
EP1964524B1 true EP1964524B1 (en) 2016-06-15

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EP08075145.6A Expired - Fee Related EP1964524B1 (en) 2007-02-28 2008-02-08 Surgical stapling apparatus

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US (1) US7682367B2 (ja)
EP (1) EP1964524B1 (ja)
JP (2) JP5466827B2 (ja)
CN (1) CN101288594B (ja)
AU (1) AU2008200574B2 (ja)
CA (1) CA2619112A1 (ja)

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